Hello,
We no longer provide CDs with software and other downloads.
All relevant documents and files related to the 2602A series SMUs can be found here:
https://www.tek.com/en/search?keywords=2602A
The most current control software is KickStart: https://www.tek.com/en/products/keithley/keithley-control-software-bench-instruments/kickstart
And you may also be interested in Test Script Builder: https://www.tek.com/en/keithley-test-script-builder
Many responses to support requests and technical questions can be found here in the TekTalk community forum.
Otherwise, you can create a case to receive contact from one of our engineers directly:
https://www.tek.com/en/support
However, the A-series models are obsolete and generally unsupported, having been replaced by the 26xxB series.
Our engineers will be able to provide limited support of questions related to the use of the 2602A.